I'm developing a dashboard using Apache Hive as the backend storage (using an ODBC driver) and I've noticed something strange.
When I add a datasource, Power BI runs the query 3 times for each refresh. Some of these queries are quite complex on huge datasets, with many joins that can take > 15 minutes to complete. Having Power BI run the exact same query 3 times is causing issues.
What is Power BI doing, and is there any way to get it to not run the same query multiple times on each refresh?
I'm on Power BI version 2.47.4766.542 64-bit (June 2017)